1281減算製品と整数の桁数の合計

class Solution {
public:
    int subtractProductAndSum(int n) {
        int sum=0;
        int multiple=1;
        while(n!=0){
            sum += n%10;
            multiple *= n%10;
            n = n/10;
        }
        //cout<<sum<<endl;
        //cout<<multiple<<endl;
        
        return multiple-sum;
    }
};